參數(shù)資料
型號： AK4671EG
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： Stereo CODEC with MIC/RCV/HP-AMP
中文描述： 立體聲編解碼器麥克風/垃圾車/惠普腺苷
文件頁數(shù)： 157/164頁
文件大?。?/td> 1792K
代理商： AK4671EG
[AK4671]
MS0666-E-00
2007/10
- 157 -
CONTROL SEQUENCE (PCM)
■
Clock Set up
When ADC or DAC is powered-up, the clocks must be supplied.
1.
PCM I/F A Slave Mode
PMPCM bit
(Addr:53H, D2)
Internal Clock
(1)
Power Supply
PDN pin
PMVCM bit
(Addr:00H, D0)
(2)
(3)
SYNCA pin
BICKA pin
(4)
(5)
Input
4fs of
“H”
Example:
PCM I/F A Format : Linear, Short Frame (ADC & DAC)
PLLBT Reference clock: SYNCA
SYNCA frequency: 1fs2
Sampling Frequency: 8kHz
(3) Addr:00H, Data:01H
(2) Addr:02H, Data:C0H
Addr:03H, Data:12H
Addr:54H, Data:00H
Addr:53H, Data:00H
Addr:55H, Data:00H
(4) Addr:53H, Data:04H
Figure 122. Clock Set Up Sequence (1)
<Example>
(1)
After Power Up, PDN pin = “L”
“H”. “L” time of 150ns or more is needed to reset the AK4671.
The AK4671 should be operated as the recommended power-up/down sequence shown in “System Design
(Grounding and Power Supply Decoupling)” to avoid pop noise at the receiver output, headphone output and
lineout output.
(2)
BTCLK, LP, SDOD, FMTA1-0, LAWA1-0, BCKPA, MSBSA, PLLBT3-0 bits should be set during this
period.
(3)
Power Up VCOM: PMVCM bit = “0”
“1”
VCOM should first be powered up before the other block operates.
(4)
PLLBT starts after the PMPCM bit changes from “0” to “1” and PLLBT reference clock (SYNCA or BICKA
pin) is supplied. PLLBT lock time is 260ms(max.) when SYNCA is a PLLBT reference clock. And PLLBT
lock time is 40ms(max.) when BICKA is a PLLBT reference clock.
(5)
Normal operation stats after that the PLLBT is locked.
相關(guān)PDF資料
PDF描述
AK4673 Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4673EG Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4682 Multi-channel CODEC with 2Vrms Stereo Selector
AK4682EQ Multi-channel CODEC with 2Vrms Stereo Selector
AK4683_07 Asynchronous Multi-Channel Audio CODEC with DIR/T
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4673 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4673EG 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4675 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP
AK4675EG 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP
AK4682 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with 2Vrms Stereo Selector
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